Camera optical lens

ABSTRACT

The present disclosure discloses a camera optical lens. The camera optical lens including, in an order from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens. The first lens is made of glass material, the second lens is made of plastic material, the third lens is made of plastic material, the fourth lens is made of plastic material, the fifth lens is made of glass material, the sixth lens is made of plastic material, and the seventh lens is made of plastic material. The camera optical lens further satisfies specific conditions.

FIELD OF THE PRESENT DISCLOSURE

The present disclosure relates to optical lens, in particular to acamera optical lens suitable for handheld devices such as smart phonesand digital cameras and imaging devices.

DESCRIPTION OF RELATED ART

With the emergence of smart phones in recent years, the demand forminiature camera lens is increasing day by day, but the photosensitivedevices of general camera lens are no other than Charge Coupled Device(CCD) or Complementary metal-Oxide Semiconductor Sensor (CMOS sensor),and as the progress of the semiconductor manufacturing technology makesthe pixel size of the photosensitive devices shrink, coupled with thecurrent development trend of electronic products being that theirfunctions should be better and their shape should be thin and small,miniature camera lens with good imaging quality therefor has become amainstream in the market. In order to obtain better imaging quality, thelens that is traditionally equipped in mobile phone cameras adopts athree-piece or four-piece lens structure. And, with the development oftechnology and the increase of the diverse demands of users, and underthis circumstances that the pixel area of photosensitive devices isshrinking steadily and the requirement of the system for the imagingquality is improving constantly, the five-piece, six-piece andseven-piece lens structure gradually appear in lens design. There is anurgent need for ultra-thin wide-angle camera lenses which have goodoptical characteristics and the chromatic aberration of which is fullycorrected.

BRIEF DESCRIPTION OF THE DRAWINGS

Many aspects of the exemplary embodiments can be better understood withreference to the following drawings. The components in the drawing arenot necessarily drawn to scale, the emphasis instead being placed uponclearly illustrating the principles of the present disclosure.

FIG. 1 is a schematic diagram of a camera optical lens in accordancewith a first embodiment of the present invention;

FIG. 2 shows the longitudinal aberration of the camera optical lensshown in FIG. 1;

FIG. 3 shows the lateral color of the camera optical lens shown in FIG.1;

FIG. 4 presents a schematic diagram of the field curvature anddistortion of the camera optical lens shown in FIG. 1;

FIG. 5 is a schematic diagram of a camera optical lens in accordancewith a second embodiment of the present invention;

FIG. 6 presents the longitudinal aberration of the camera optical lensshown in FIG. 5;

FIG. 7 presents the lateral color of the camera optical lens shown inFIG. 5;

FIG. 8 presents the field curvature and distortion of the camera opticallens shown in FIG. 5.

DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS

The present disclosure will hereinafter be described in detail withreference to several exemplary embodiments. To make the technicalproblems to be solved, technical solutions and beneficial effects of thepresent disclosure more apparent, the present disclosure is described infurther detail together with the figure and the embodiments. It shouldbe understood the specific embodiments described hereby is only toexplain the disclosure, not intended to limit the disclosure.

Embodiment 1

As referring to FIG. 1, the present invention provides a camera opticallens 10. FIG. 1 shows the camera optical lens 10 of embodiment 1 of thepresent invention, the camera optical lens 10 comprises 7 lenses.Specifically, from the object side to the image side, the camera opticallens 10 comprises in sequence: an aperture S1, a first lens L1, a secondlens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixthlens L6 and a seventh lens L7. Optical element like optical filter GFcan be arranged between the seventh lens L7 and the image surface Si.The first lens L1 is made of glass material, the second lens L2 is madeof plastic material, the third lens L3 is made of plastic material, thefourth lens L4 is made of plastic material, the fifth lens L5 is made ofglass material, the sixth lens L6 is made of plastic material, theseventh lens L7 is made of plastic material;

Here, the focal length of the whole camera optical lens 10 is defined asf, the focal length of the first lens is defined as f1. The cameraoptical lens 10 further satisfies the following condition:−10≤f1/f≤−3.1. Condition −10≤f1/f≤−3.1 fixes the negative refractivepower of the first lens L1. If the upper limit of the set value isexceeded, although it benefits the ultra-thin development of lenses, butthe negative refractive power of the first lens L1 will be too strong,problem like aberration is difficult to be corrected, and it is alsounfavorable for wide-angle development of lens. On the contrary, if thelower limit of the set value is exceeded, the negative refractive powerof the first lens L1 becomes too weak, it is then difficult to developultra-thin lenses.

The refractive power of the first lens L1 is n1. Here the followingcondition should satisfied: 1.7≤n1≤2.2. This condition fixes therefractive power of the first lens L1, and refractive power within thisrange benefits the ultra-thin development of lenses, and it alsobenefits the correction of aberration. Preferably, the followingcondition shall be satisfied, 1.7≤n1≤2.

The refractive power of the fifth lens L5 is n5. Here the followingcondition should satisfied: 1.7≤n5≤2.2. This condition fixes therefractive power of the fifth lens L5, and refractive power within thisrange benefits the ultra-thin development of lenses, and it alsobenefits the correction of aberration. Preferably, the followingcondition shall be satisfied, 1.7≤n5≤1.9.

The focal length of the sixth lens L6 is defined as f6, and the focallength of the seventh lens L7 is defined as f7. The camera optical lens10 should satisfy the following condition: 1≤f6/f7≤10, which fixes theratio between the focal length f6 of the sixth lens L6 and the focallength f7 of the seventh lens L7. A ratio within this range caneffectively reduce the sensitivity of lens group used in camera andfurther enhance the imaging quality. Preferably, the following conditionshall be satisfied, 1.6≤f6/f7≤9.5.

The curvature radius of the object side surface of the first lens L1 isdefined as R1, the curvature radius of the image side surface of thefirst lens L1 is defined as R2. The camera optical lens 10 furthersatisfies the following condition: 2.1≤(R1+R2)/(R1−R2)≤10, which fixesthe shape of the first lens L1, when the value is beyond this range,with the development into the direction of ultra-thin and wide-anglelenses, problem like aberration of the off-axis picture angle isdifficult to be corrected. Preferably, the condition 2.1(R1+R2)/(R1−R2)≤8.5 shall be satisfied.

When the focal length of the camera optical lens 10 of the presentinvention, the focal length of each lens, the refractive power of therelated lens, and the total optical length, the thickness on-axis andthe curvature radius of the camera optical lens satisfy the aboveconditions, the camera optical lens 10 has the advantage of highperformance and satisfies the design requirement of low TTL.

In this embodiment, the object side surface of the first lens L1 is aconvex surface relative to the proximal axis, its image side surface isa concave surface relative to the proximal axis, and it has a negativerefractive power.

The thickness on-axis of the first lens L1 is defined as d1. Thefollowing condition: 0.09≤d1≤0.3 should be satisfied. When the conditionis satisfied, it is beneficial for realization of the ultra-thin lens.Preferably, the condition 0.14≤d1≤0.24 shall be satisfied.

In this embodiment, the object side surface of the second lens L2 is aconvex surface relative to the proximal axis, its image side surface isa convex surface relative to the proximal axis, and it has positiverefractive power.

The focal length of the whole camera optical lens 10 is f, the focallength of the second lens L2 is f2. The following condition should besatisfied: 0.55≤f2/f≤1.79. When the condition is satisfied, the positiverefractive power of the second lens L2 is controlled within reasonablescope, the spherical aberration caused by the first lens L1 which hasnegative refractive power and the field curvature of the system then canbe reasonably and effectively balanced. Preferably, the condition 0.87f2/f≤1.43 should be satisfied.

The curvature radius of the object side surface of the second lens L2 isdefined as R3, the curvature radius of the image side surface of thesecond lens L2 is defined as R4. The following condition should besatisfied: −1.21 (R3+R4)/(R3−R4)≤−0.35, which fixes the shape of thesecond lens L2 and can effectively correct aberration of the cameraoptical lens. Preferably, the following condition shall be satisfied,−0.76≤(R3+R4)/(R3−R4)≤−0.44.

The thickness on-axis of the second lens L2 is defined as d3. Thefollowing condition: 0.26≤d3≤0.93 should be satisfied. When thecondition is satisfied, it is beneficial for realization of theultra-thin lens. Preferably, the condition 0.41≤d3≤0.75 shall besatisfied.

In this embodiment, the object side surface of the third lens L3 is aconvex surface relative to the proximal axis, its image side surface isa concave surface relative to the proximal axis, and it has negativerefractive power.

The focal length of the whole camera optical lens 10 is f, the focallength of the third lens L3 is f3. The following condition should besatisfied: −16.72≤f3/f≤−5.1. When the condition is satisfied, the fieldcurvature of the system can be reasonably and effectively balanced forfurther improving the image quality. Preferably, the condition−10.45≤f3/f≤−6.37 should be satisfied.

The curvature radius of the object side surface of the third lens L3 isdefined as R5, the curvature radius of the image side surface of thethird lens L3 is defined as R6. The following condition should besatisfied: 4.29≤(R5+R6)/(R5−R6)≤13.36, which is beneficial for theshaping of the third lens L3, and bad shaping and stress generation dueto extra large curvature of surface of the third lens L3 can be avoided.Preferably, the following condition shall be satisfied,6.87≤(R5+R6)/(R5−R6)≤10.69.

The thickness on-axis of the third lens L3 is defined as d5. Thefollowing condition: 0.11≤d5≤0.4 should be satisfied. When the conditionis satisfied, it is beneficial for realization of the ultra-thin lens.Preferably, the condition 0.17≤d5≤0.32 shall be satisfied.

In this embodiment, the object side surface of the fourth lens L4 is aconvex surface relative to the proximal axis, the image side surface ofthe fourth lens L4 is a concave surface relative to the proximal axisand it has negative refractive power.

The focal length of the whole camera optical lens 10 is f, the focallength of the fourth lens L4 is f4. The following condition should besatisfied: −6.65≤f4/f≤−1.94. When the condition is satisfied, theappropriate distribution of refractive power makes it possible that thesystem has better imaging quality and lower sensitivity. Preferably, thecondition −4.15≤f4/f≤−2.42 should be satisfied.

The curvature radius of the object side surface of the fourth lens L4 isdefined as R7, the curvature radius of the image side surface of thefourth lens L4 is defined as R8. The following condition should besatisfied: 0.88≤(R7+R8)/(R7−R8)≤3.69, which fixes the shaping of thefourth lens L4. When beyond this range, with the development into thedirection of ultra-thin and wide-angle lens, the problem like chromaticaberration is difficult to be corrected. Preferably, the followingcondition shall be satisfied, 1.41≤(R7+R8)/(R7−R8)≤2.95.

The thickness on-axis of the fourth lens L4 is defined as d7. Thefollowing condition: 0.19≤d7≤0.58 should be satisfied. When thecondition is satisfied, it is beneficial for realization of theultra-thin lens. Preferably, the condition 0.3≤d7≤0.46 shall besatisfied.

In this embodiment, the object side surface of the fifth lens L5 is aconcave surface relative to the proximal axis, the image side surface ofthe fifth lens L5 is a convex surface relative to the proximal axis. Thefifth lens L5 has positive refractive power.

The focal length of the whole camera optical lens 10 is f, the focallength of the fifth lens L5 is f5. The following condition should besatisfied: 0.28≤f5/f≤0.9, which can effectively make the light angle ofthe camera lens flat and reduces the tolerance sensitivity. Preferably,the condition 0.45≤f5/f≤0.72 should be satisfied.

The curvature radius of the object side surface of the fifth lens L5 isdefined as R9, the curvature radius of the image side surface of thefifth lens L5 is defined as R10. The following condition should besatisfied: 0.6≤(R9+R10)/(R9−R10)≤1.84, which fixes the shaping of thefifth lens L5. When beyond this range, with the development into thedirection of ultra-thin and wide-angle lens, the problem like chromaticaberration is difficult to be corrected. Preferably, the followingcondition shall be satisfied, 0.95≤(R9+R10)/(R9−R10)≤1.47.

The thickness on-axis of the fifth lens L5 is defined as d9. Thefollowing condition: 0.52≤d9≤1.57 should be satisfied. When thecondition is satisfied, it is beneficial for realization of theultra-thin lens. Preferably, the condition 0.84≤d9≤1.26 shall besatisfied.

In this embodiment, the object side surface of the sixth lens L6 is aconvex surface relative to the proximal axis, the image side surface ofthe sixth lens L6 is a concave surface relative to the proximal axis,and it has negative refractive power.

The focal length of the whole camera optical lens 10 is f, the focallength of the sixth lens L6 is f6. The following condition should besatisfied: −14.24≤f6/f≤−1.53. When the condition is satisfied, theappropriate distribution of refractive power makes it possible that thesystem has better imaging quality and lower sensitivity. Preferably, thecondition −8.9≤f6/f≤−1.91 should be satisfied.

The curvature radius of the object side surface of the sixth lens L6 isdefined as R11, the curvature radius of the image side surface of thesixth lens L6 is defined as R12. The following condition should besatisfied: 0.83≤(R11+R12)/(R11−R12)≤6.54, which fixes the shaping of thesixth lens L6. When beyond this range, with the development into thedirection of ultra-thin and wide-angle lens, the problem like chromaticaberration is difficult to be corrected. Preferably, the followingcondition shall be satisfied, 1.33≤(R11+R12)/(R11−R12)≤5.23.

The thickness on-axis of the sixth lens L6 is defined as d11. Thefollowing condition: 0.22≤d11≤0.85 should be satisfied. When thecondition is satisfied, it is beneficial for realization of theultra-thin lens. Preferably, the condition 0.35≤d11≤0.68 shall besatisfied.

In this embodiment, the object side surface of the seventh lens L7 is aconvex surface relative to the proximal axis, the image side surface ofthe seventh lens L7 is a concave surface relative to the proximal axis,and it has negative refractive power.

The focal length of the whole camera optical lens 10 is f, the focallength of the seventh lens L7 is f7. The following condition should besatisfied: −2.08≤f7/f≤−0.56. When the condition is satisfied, theappropriate distribution of refractive power makes it possible that thesystem has better imaging quality and lower sensitivity. Preferably, thecondition −1.3≤f7/f≤−0.7 should be satisfied.

The curvature radius of the object side surface of the seventh lens L7is defined as R13, the curvature radius of the image side surface of theseventh lens L7 is defined as R14. The following condition should besatisfied: 0.78≤(R13+R14)/(R13−R14)≤2.53, which fixes the shaping of theseventh lens L7. When beyond this range, with the development into thedirection of ultra-thin and wide-angle lens, the problem like chromaticaberration is difficult to be corrected. Preferably, the followingcondition shall be satisfied, 1.24≤(R13+R14)/(R13−R14)≤2.02.

The thickness on-axis of the seventh lens L7 is defined as d13. Thefollowing condition: 0.15≤d13≤0.79 should be satisfied. When thecondition is satisfied, it is beneficial for realization of theultra-thin lens. Preferably, the condition 0.23≤d13≤0.63 shall besatisfied.

In this embodiment, the total optical length TTL of the camera opticallens 10 is less than or equal to 6.7 mm, it is beneficial for therealization of ultra-thin lenses. Preferably, the total optical lengthTTL of the camera optical lens 10 is less than or equal to 6.39.

In this embodiment, the aperture F number of the camera optical lens 10is less than or equal to 2.47. A large aperture has better imagingperformance. Preferably, the aperture F number of the camera opticallens 10 is less than or equal to 2.42.

With such design, the total optical length TTL of the whole cameraoptical lens 10 can be made as short as possible, thus theminiaturization characteristics can be maintained.

In the following, an example will be used to describe the camera opticallens 10 of the present invention. The symbols recorded in each exampleare as follows. The unit of distance, radius and center thickness is mm.

TTL: Optical length (the distance on-axis from the object side surfaceof the first lens L1 to the image surface).

Preferably, inflexion points and/or arrest points can also be arrangedon the object side surface and/or image side surface of the lens, sothat the demand for high quality imaging can be satisfied, thedescription below can be referred for specific implementable scheme.

The design information of the camera optical lens 10 in the firstembodiment of the present invention is shown in the following, the unitof the focal length, distance, radius and center thickness is mm.

The design information of the camera optical lens 10 in the firstembodiment of the present invention is shown in the tables 1 and 2.

TABLE 1 R d nd νd S1 ∞ d0 = −0.076 R1 3.108 d1 = 0.180 nd1 1.7225 v129.23 R2 2.311 d2 = 0.102 R3 2.834 d3 = 0.621 nd2 1.5445 v2 55.99 R4−11.572 d4 = 0.030 R5 5.339 d5 = 0.215 nd3 1.6713 v3 19.24 R6 4.225 d6 =0.361 R7 11.684 d7 = 0.384 nd4 1.6713 v4 19.24 R8 4.930 d8 = 0.343 R9−16.816 d9 = 1.049 nd5 1.7130 v5 53.87 R10 −1.468 d10 = 0.020 R11 8.443d11 = 0.443 nd6 1.5388 v6 56.07 R12 5.293 d12 = 0.200 R13 6.199 d13 =0.291 nd7 1.5388 v7 56.07 R14 1.345 d14 = 1.154 R15 ∞ d15 = 0.210 ndg1.5168 vg 64.17 R16 ∞ d16 = 0.484

Where:

In which, the meaning of the various symbols is as follows.

S1: Aperture;

R: The curvature radius of the optical surface, the central curvatureradius in case of lens;

R1: The curvature radius of the object side surface of the first lensL1;

R2: The curvature radius of the image side surface of the first lens L1;

R3: The curvature radius of the object side surface of the second lensL2;

R4: The curvature radius of the image side surface of the second lensL2;

R5: The curvature radius of the object side surface of the third lensL3;

R6: The curvature radius of the image side surface of the third lens L3;

R7: The curvature radius of the object side surface of the fourth lensL4;

R8: The curvature radius of the image side surface of the fourth lensL4;

R9: The curvature radius of the object side surface of the fifth lensL5;

R10: The curvature radius of the image side surface of the fifth lensL5;

R11: The curvature radius of the object side surface of the sixth lensL6;

R12: The curvature radius of the image side surface of the sixth lensL6;

R13: The curvature radius of the object side surface of the seventh lensL7;

R14: The curvature radius of the image side surface of the seventh lensL7;

R15: The curvature radius of the object side surface of the opticalfilter GF;

R16: The curvature radius of the image side surface of the opticalfilter GF;

d: The thickness on-axis of the lens and the distance on-axis betweenthe lens;

d0: The distance on-axis from aperture S1 to the object side surface ofthe first lens L1;

d1: The thickness on-axis of the first lens L1;

d2: The distance on-axis from the image side surface of the first lensL1 to the object side surface of the second lens L2;

d3: The thickness on-axis of the second lens L2;

d4: The distance on-axis from the image side surface of the second lensL2 to the object side surface of the third lens L3;

d5: The thickness on-axis of the third lens L3;

d6: The distance on-axis from the image side surface of the third lensL3 to the object side surface of the fourth lens L4;

d7: The thickness on-axis of the fourth lens L4;

d8: The distance on-axis from the image side surface of the fourth lensL4 to the object side surface of the fifth lens L5;

d9: The thickness on-axis of the fifth lens L5;

d10: The distance on-axis from the image side surface of the fifth lensL5 to the object side surface of the sixth lens L6;

d1: The thickness on-axis of the sixth lens L6;

d12: The distance on-axis from the image side surface of the sixth lensL6 to the object side surface of the seventh lens L7;

d13: The thickness on-axis of the seventh lens L7;

d14: The distance on-axis from the image side surface of the seventhlens L7 to the object side surface of the optical filter GF;

d15: The thickness on-axis of the optical filter GF;

d16: The distance on-axis from the image side surface to the imagesurface of the optical filter GF;

nd: The refractive power of the d line;

nd1: The refractive power of the d line of the first lens L1;

nd2: The refractive power of the d line of the second lens L2;

nd3: The refractive power of the d line of the third lens L3;

nd4: The refractive power of the d line of the fourth lens L4;

nd5: The refractive power of the d line of the fifth lens L5;

nd6: The refractive power of the d line of the sixth lens L6;

nd7: The refractive power of the d line of the seventh lens L7;

ndg: The refractive power of the d line of the optical filter GF;

vd: The abbe number;

v1: The abbe number of the first lens L1;

v2: The abbe number of the second lens L2;

v3: The abbe number of the third lens L3;

v4: The abbe number of the fourth lens L4;

v5: The abbe number of the fifth lens L5;

v6: The abbe number of the sixth lens L6;

v7: The abbe number of the seventh lens L7;

vg: The abbe number of the optical filter GF.

Table 2 shows the aspherical surface data of the camera optical lens 10in the embodiment 1 of the present invention.

TABLE 2 Conic Index Aspherical Surface Index k A4 A6 A8 A10 A12 A14 A16R1   1.4607E+00 −2.0563E−02 −7.1802E−03   5.5608E−03   5.9525E−03−2.7128E−03 −2.5357E−03   0.0000E+00 R2 −1.1806E+00 −1.0530E−02  6.4932E−04   1.7855E−02   1.2179E−02 −2.5735E−03   4.2019E−03  0.0000E+00 R3 −6.7762E+00 −1.7501E−02 −1.6924E−02 −1.3051E−02  7.2751E−03   1.3232E−02 −9.6841E−03   0.0000E+00 R4   1.1256E+02−6.8414E−02 −1.3989E−02 −1.0646E−02   2.6072E−03   2.7872E−03−4.1405E−03 −7.9690E−04 R5   0.0000E+00 −1.0837E−03   6.2314E−03  3.8925E−03 −6.6327E−03 −1.1127E−03   3.5672E−04   3.5259E−04 R6  0.0000E+00 −5.7135E−03   8.9337E−03   3.4116E−03 −1.1877E−03−3.8953E−03   2.3579E−04   2.4176E−04 R7   2.0528E+01 −1.0893E−01−1.4336E−02 −4.6689E−03   1.0256E−02   6.3980E−03   2.7881E−04−2.1644E−0  R8   8.5562E+00 −7.6485E−02 −6.1038E−03 −9.9169E−04−3.6884E−04   7.9122E−04   0.0000E+00   0.0000E+00 R9   1.1107E+02−2.4766E−03   1.5068E−02 −7.9688E−03   2.0085E−04   5.1825E−04  0.0000E+00   0.0000E+00 R10 −3.9626E+00 −5.2469E−02   1.9994E−02−2.5330E−03   4.2470E−04   0.0000E+00   0.0000E+00   0.0000E+00 R11  6.4514E+00 −2.5383E−02   2.6199E−03   1.7580E−04 −8.8496E−05  0.0000E+00   0.0000E+00   0.0000E+00 R12 −7.8242E−01 −1.0135E−03−2.2370E−04 −8.5061E−06   5.9092E−06   0.0000E+00   0.0000E+00  0.0000E+00 R13 −9.0671E−01   1.4519E−04 −1.2280E−04   7.0101E−06  1.7018E−06   0.0000E+00   0.0000E+00   0.0000E+00 R14 −4.2761E+00−1.0423E−02   1.8404E−03 −2.1940E−04   8.2202E−06   0.0000E+00  0.0000E+00   0.0000E+00

Among them, K is a conic index, A4, A6, A8, A10, A12, A14, A16 areaspheric surface indexes.

IH: Image heighty=(x ² /R)/[1+{1−(k+1)(x ² /R ²)}^(1/2)]+A4x ⁴ +A6x ⁶ +A8x ⁸ +A10x ¹⁰+A12x ¹² +A14x ¹⁴ +A16x ¹⁶  (1)

For convenience, the aspheric surface of each lens surface uses theaspheric surfaces shown in the above condition (1). However, the presentinvention is not limited to the aspherical polynomials form shown in thecondition (1).

Table 3 and table 4 show the inflexion points and the arrest pointdesign data of the camera optical lens 10 lens in embodiment 1 of thepresent invention. In which, R1 and R2 represent respectively the objectside surface and image side surface of the first lens L1, R3 and R4represent respectively the object side surface and image side surface ofthe second lens L2, R5 and R6 represent respectively the object sidesurface and image side surface of the third lens L3, R7 and R8 representrespectively the object side surface and image side surface of thefourth lens L4, R9 and R10 represent respectively the object sidesurface and image side surface of the fifth lens L5, R11 and R12represent respectively the object side surface and image side surface ofthe sixth lens L6, R13 and R14 represent respectively the object sidesurface and image side surface of the seventh lens L7. The data in thecolumn named “inflexion point position” are the vertical distances fromthe inflexion points arranged on each lens surface to the optic axis ofthe camera optical lens 10. The data in the column named “arrest pointposition” are the vertical distances from the arrest points arranged oneach lens surface to the optic axis of the camera optical lens 10.

TABLE 3 Inflexion Inflexion point Inflexion point point number position1 position 2 R1 1 1.025 R2 0 R3 1 0.685 R4 0 R5 1 1.005 R6 1 1.045 R7 10.265 R8 2 0.495 1.315 R9 2 1.405 1.495 R10 1 1.235 R11 1 0.695 R12 0R13 0 R14 1 1.235

TABLE 4 Arrest point Arrest point Arrest point number position 1position 2 R1 R2 R3 R4 R5 R6 R7 1 0.435 R8 2 0.845 1.475 R9 R10 R11 11.325 R12 R13 R14

FIG. 2 and FIG. 3 show the longitudinal aberration and lateral colorschematic diagrams after light with a wavelength of 470 nm, 555 nm and650 nm passes the camera optical lens 10 in the first embodiment. FIG. 4shows the field curvature and distortion schematic diagrams after lightwith a wavelength of 555 nm passes the camera optical lens 10 in thefirst embodiment, the field curvature S in FIG. 4 is a field curvaturein the sagittal direction, T is a field curvature in the meridiandirection.

Table 9 shows the various values of the embodiments 1, 2 and the valuescorresponding with the parameters which are already specified in theconditions.

As shown in Table 9, the first embodiment satisfies the variousconditions.

In this embodiment, the pupil entering diameter of the camera opticallens is 1.891 mm, the full vision field image height is 2.9935 mm, thevision field angle in the diagonal direction is 74.98°, it haswide-angle and is ultra-thin, its on-axis and off-axis chromaticaberrations are fully corrected, and it has excellent opticalcharacteristics.

Embodiment 2

Embodiment 2 is basically the same as embodiment 1, the meaning of itssymbols is the same as that of embodiment 1, in the following, only thedifferences are described.

Table 5 and table 6 show the design data of the camera optical lens 20in embodiment 2 of the present invention.

TABLE 5 R d nd νd S1 ∞ d0 = 0.000 R1 49.246 d1 = 0.200 nd1 1.8548 v124.80 R2 19.244 d2 = 0.102 R3 3.266 d3 = 0.512 nd2 1.5445 v2 55.99 R4−10.497 d4 = 0.030 R5 4.460 d5 = 0.265 nd3 1.6713 v3 19.24 R6 3.560 d6 =0.374 R7 19.698 d7 = 0.370 nd4 1.6713 v4 19.24 R8 5.452 d8 = 0.321 R9−15.268 d9 = 1.049 nd5 1.7292 v5 54.67 R10 −1.569 d10 = 0.020 R11 14.290d11 = 0.568 nd6 1.5388 v6 56.07 R12 3.537 d12 = 0.250 R13 6.075 d13 =0.528 nd7 1.5388 v7 56.07 R14 1.549 d14 = 0.800 R15 ∞ d15 = 0.210 ndg1.5168 vg 64.17 R16 ∞ d16 = 0.371

Table 6 shows the aspherical surface data of each lens of the cameraoptical lens 20 in embodiment 2 of the present invention.

TABLE 6 Conic Index Aspherical Surface Index k A4 A6 A8 A10 A12 A14 A16R1   2.6830E+03 −8.8014E−03 −1.5046E−02   1.2605E−02   1.7040E−02−2.6269E−03 −1.8109E−02   0.0000E+00 R2   3.1049E+02 −8.7180E−04  9.4053E−03   1.2266E−02   2.3310E−02   2.1967E−02 −4.6134E−02  0.0000E+00 R3 −2.0012E+00   4.6948E−04   3.9149E−03   6.9356E−03  6.5655E−03   2.9833E−03 −6.0098E−03   0.0000E+00 R4   8.3457E+01−6.8404E−02   2.1472E−03 −7.6243E−03   2.5918E−03 −7.3533E−04−7.1589E−03   9.3682E−03 R5   0.0000E+00 −6.9060E−03   1.5272E−04  1.6406E−03 −9.7586E−03 −3.0951E−03 −6.6788E−05 −3.8554E−04 R6  0.0000E+00 −8.9440E−05   9.7535E−03   1.3443E−03 −1.7166E−03−4.5642E−03 −8.4050E−04   4.5336E−04 R7 −3.1602E+02 −1.1091E−01−1.2217E−02 −8.2776E−03   9.4977E−03   6.2765E−03 −4.2141E−05−2.6364E−03 R8   7.5654E+00 −7.7932E−02 −7.1741E−03 −1.6897E−03−1.1457E−03   5.1056E−04   0.0000E+00   0.0000E+00 R9   5.7368E+01−8.3165E−03   1.5443E−02 −8.2086E−03   1.2586E−04   3.7289E−04  0.0000E+00   0.0000E+00 R10 −3.6403E+00 −5.8556E−02   2.1754E−02−2.2257E−03   4.0927E−04   0.0000E+00   0.0000E+00   0.0000E+00 R11−2.9002E+02 −2.1872E−02   1.9998E−03   4.8980E−05 −7.0590E−05  0.0000E+00   0.0000E+00   0.0000E+00 R12 −1.8173E+00 −2.9606E−03−1.2818E−04 −9.6295E−06 −1.8047E−06   0.0000E+00   0.0000E+00  0.0000E+00 R13 −4.2460E−01 −1.5012E−04 −2.3238E−04 −8.5866E−06  3.0051E−06   0.0000E+00   0.0000E+00   0.0000E+00 R14 −4.0699E+00−1.2148E−02   1.8910E−03 −2.1375E−04   7.8487E−06   0.0000E+00  0.0000E+00   0.0000E+00

Table 7 and table 8 show the inflexion points and the arrest pointdesign data of the camera optical lens 20 lens in embodiment 2 of thepresent invention.

TABLE 7 Inflexion point Inflexion point Inflexion point number position1 position 2 R1 2 0.435 0.625 R2 0 R3 0 R4 0 R5 1 0.815 R6 1 0.985 R7 10.195 R8 1 0.455 R9 0 R10 1 1.215 R11 1 0.445 R12 1 1.855 R13 0 R14 11.235

TABLE 8 Arrest point Arrest point number position 1 R1 R2 R3 R4 R5 11.055 R6 R7 1 0.325 R8 1 0.765 R9 R10 R11 1 0.795 R12 R13 R14

FIG. 6 and FIG. 7 show the longitudinal aberration and lateral colorschematic diagrams after light with a wavelength of 470 nm, 555 nm and650 nm passes the camera optical lens 20 in the second embodiment. FIG.8 shows the field curvature and distortion schematic diagrams afterlight with a wavelength of 555 nm passes the camera optical lens 20 inthe second embodiment.

As shown in Table 9, the second embodiment satisfies the variousconditions.

In this embodiment, the pupil entering diameter of the camera opticallens is 1.61 mm, the full vision field image height is 2.9935 mm, thevision field angle in the diagonal direction is 76.6°, it has wide-angleand is ultra-thin, its on-axis and off-axis chromatic aberrations arefully corrected, and it has excellent optical characteristics.

TABLE 9 Embodiment 1 Embodiment 2 f 3.877 3.865 f1 −13.701 −36.801 f24.232 4.621 f3 −32.404 −29.542 f4 −12.882 −11.245 f5 2.186 2.315 f6−27.611 −8.858 f7 −3.246 −4.011 f6/f7 8.507 2.208 (R1 + R2)/ 6.800 2.283(R1 − R2) (R3 + R4)/ −0.607 −0.525 (R3 − R4) (R5 + R6)/ 8.585 8.907 (R5− R6) (R7 + R8)/ 2.460 1.765 (R7 − R8) (R9 + R10)/ 1.191 1.229 (R9 −R10) (R11 + R12)/ 4.361 1.658 (R11 − R12) (R13 + R14)/ 1.554 1.685 (R13− R14) f1/f −3.534 −9.523 f2/f 1.092 1.196 f3/f −8.359 −7.644 f4/f−3.323 −2.910 f5/f 0.564 0.599 f6/f −7.122 −2.292 f7/f −0.837 −1.038 d10.180 0.200 d3 0.621 0.512 d5 0.215 0.265 d7 0.384 0.370 d9 1.049 1.049d11 0.443 0.568 d13 0.291 0.528 Fno 2.050 2.400 TTL 6.087 5.972 d7/TTL0.063 0.062 n1 1.7225 1.8548 n2 1.5445 1.5445 n3 1.6713 1.6713 n4 1.67131.6713 n5 1.7130 1.7292 n6 1.5388 1.5388 n7 1.5388 1.5388

What is claimed is:
 1. A camera optical lens comprising, from an objectside to an image side in sequence: a first lens, a second lens, a thirdlens, a fourth lens, a fifth lens, a sixth lens and a seventh lens;wherein the camera optical lens further satisfies the followingconditions:−10≤f1/f≤−3.1;1≤f6/f7≤10;1.7≤n1≤2.2;1.7≤n5≤2.2;2.1≤(R1+R2)/(R1−R2)≤10; where f: the focal length of the camera opticallens; f1: the focal length of the first lens; f6: the focal length ofthe sixth lens; f7: the focal length of the seventh lens; n1: therefractive power of the first lens; n5: the refractive power of thefifth lens; R1: the curvature radius of object side surface of the firstlens; R2: the curvature radius of image side surface of the first lens.2. The camera optical lens as described in claim 1, wherein the firstlens is made of glass material, the second lens is made of plasticmaterial, the third lens is made of plastic material, the fourth lens ismade of plastic material, the fifth lens is made of glass material, thesixth lens is made of plastic material, the seventh lens is made ofplastic material.
 3. The camera optical lens as described in claim 1,wherein first lens has a negative refractive power with a convex objectside surface and a concave image side surface; the camera optical lensfurther satisfies the following conditions:0.09≤d1≤0.3; where d1: the thickness on-axis of the first lens.
 4. Thecamera optical lens as described in claim 1, wherein the second lens hasa positive refractive power with a convex object side surface and aconvex image side surface; the camera optical lens further satisfies thefollowing conditions:0.55≤f2/f≤1.79;−1.21≤(R3+R4)/(R3−R4)≤−0.35;0.26≤d3≤0.93; where f: the focal length of the camera optical lens; f2:the focal length of the second lens; R3: the curvature radius of theobject side surface of the second lens; R4: the curvature radius of theimage side surface of the second lens; d3: the thickness on-axis of thesecond lens.
 5. The camera optical lens as described in claim 1, whereinthe third lens has a negative refractive power with a convex object sidesurface and a concave image side surface; the camera optical lensfurther satisfies the following conditions:−16.72≤f3/f≤−5.1;4.29≤(R5+R6)/(R5−R6)≤13.36;0.11≤d5≤0.4; where f: the focal length of the camera optical lens; f3:the focal length of the third lens; R5: the curvature radius of theobject side surface of the third lens; R6: the curvature radius of theimage side surface of the third lens; d5: the thickness on-axis of thethird lens.
 6. The camera optical lens as described in claim 1, whereinthe fourth lens has a negative refractive power with a convex objectside surface and a concave image side surface; the camera optical lensfurther satisfies the following conditions:−6.65≤f4/f≤−1.94;0.88≤(R7+R8)/(R7−R8)≤3.69;0.19≤d7≤0.58; where f: the focal length of the camera optical lens; f4:the focal length of the fourth lens; R7: the curvature radius of theobject side surface of the fourth lens; R8: the curvature radius of theimage side surface of the fourth lens; d7: the thickness on-axis of thefourth lens.
 7. The camera optical lens as described in claim 1, whereinthe fifth lens has a positive refractive power with a concave objectside surface and a convex image side surface; the camera optical lensfurther satisfies the following conditions:0.28≤f5/f≤0.9;0.6≤(R9+R10)/(R9−R10)≤1.84;0.52≤d9≤1.57; where f: the focal length of the camera optical lens; f5:the focal length of the fifth lens; R9: the curvature radius of theobject side surface of the fifth lens; R10: the curvature radius of theimage side surface of the fifth lens; d9: the thickness on-axis of thefifth lens.
 8. The camera optical lens as described in claim 1, whereinthe sixth lens has a negative refractive power with a convex object sidesurface and a concave image side surface; the camera optical lensfurther satisfies the following conditions:−14.24≤f6/f≤−1.53;0.83≤(R11+R12)/(R11−R12)≤6.54;0.22≤d11≤0.85; where f: the focal length of the camera optical lens; f6:the focal length of the sixth lens; R11: the curvature radius of theobject side surface of the sixth lens; R12: the curvature radius of theimage side surface of the sixth lens; d11: the thickness on-axis of thesixth lens.
 9. The camera optical lens as described in claim 1, whereinthe seventh lens has a negative refractive power with a convex objectside surface and a concave image side surface; the camera optical lensfurther satisfies the following conditions:0.78≤(R13+R14)/(R1−R2)≤10−10≤f1/f≤−3.1;1≤f6/f7−10,1.7≤n1≤2.2;1.7≤n5≤2.2; where f: the focal length of the camera optical lens; f7:the focal length of the seventh lens; d13: the thickness on-axis of theseventh lens; R13: the curvature radius of the object side surface ofthe seventh lens; R14: the curvature radius of the image side surface ofthe seventh lens.
 10. The camera optical lens as described in claim 1,wherein the total optical length TTL of the camera optical lens is lessthan or equal to 6.7 mm.
 11. The camera optical lens as described inclaim 1, wherein the aperture F number of the camera optical lens isless than or equal to 2.47.